Total replacement of fish meal by common mushroom (Agaricus bisporus) stalks meal on some growth performance of rainbow trout

Subject Areas : Breeding and Aquaculture Sciences Journal

Meysan  Salehi ¹ (تهران)
Esmaeil  Pirali Kheirabadi ² ()
Amar  Salehi Farsani ³ ()
Seyyed Pezhman  Hosseini Shekarabi ⁴ ()
Amir hossein  Omidi ⁵ ()
Arman  Jafari ⁶ ()

Received: 2017-05-16 Accepted : 2017-05-16 Published : 2017-05-16

Keywords: growth, Rainbow trout (Oncorhynchus mykiss), Mushroom stalks meal, Fishmeal replacement,

Abstract :

       In this study common mushroom stalks meal (MSM), as a huge waste of commercial mushroom culturing, was conducted to evaluate as a replacement for fish meal in diets of juvenile rainbow trout in an initial 46 days feeding trial. Two diets containing 0% and %100 MSM were formulated. Significant differences in survival rate (%) between the fish meal based control diet and diets containing up to 100% MSM was not observed (p>0.05). Feed conversion ratio (FCR) of common diet (1.35±0.036) showed significantly increased with fish meal diet (p<0.05). However, MSM diet showed the best results in BWG (16.50±5.185 %), SGR (1.29±0.055), FCR (1.26±0.066), HIS (1.53±0.235 %) and VSI (20.52±0.763 %) in comparison to common diet (p<0.05). Based on the results, juvenile rainbow trout diet contain up to 100% MSM without any loss of growth performance, thereby showing higher growth properties in comparison with fish meal. This study shows that mushroom stalks meal can replace 100% of fish meal in experimental rainbow trout diets. Further trials to identify the best formula between MSM and fish meal are necessary.